This beautiful artwork was made by the kids at Cakies. Their mom, Rubyellen, got things going by taking a photograph to a copy shop.

Rubyellen had her Eiffel Tower picture enlarged to fit an 18" x 24" copy, then had her kids bust out the watercolors. When they were done, she hung their handiwork up with colored tape, et voilà. This project would be incredible done huge; print shops that cater to architects can easily and affordably produce large format copies.